8-4
BajaPPC-750: Serial and Parallel I/O
8.2 I/O Controller
The SMC FDC37C935 Ultra I/O controller is a versatile single-chip device that
provides support for keyboard, mouse, hard disk, floppy disk, parallel port, and
serial port input/output.
NOTE.
Only the parallel port and high-speed serial channels are utilized in
the BajaPPC-750 implementation of this chip.
21
W
Initialization Command Word 3 - Master
04
A1
W
Initialization Command Word 3 - Slave
—
21 - PIC1; A1 - PIC2
W
Initialization Command Word 4
—
21 - PIC1; A1 - PIC2
R/W
Operational Control Word 1
—
4D0 - PIC1; 4D1 - PIC2
R/W
Interrupt Edge/Level Control
00
Counter/Timer I/O Registers
40; 41; 42
R/W
Counter
4
—
40; 41; 42
R
Counter Status
4
—
43
W
Timer Control
—
7B-78
—
BIOS Timer
000000
Miscellaneous I/O Control Registers
61
R/W
NMI Status and Control (Port B)
00
70
—
NMI Enable and RTC Address
0xxx,xxxx
92
R/W
Port 92
24
F0
W
Co-processor Error
—
810
W
RTC CMOS RAM Protect 1
—
812
W
RCT CMOS RAM Protect 2
—
1. Hex offset values are for Channels 0 through 7, respectively.
2. Hex offset values are for Controller 1 and Controller 2, respectively.
3. Hex offset values are for Pages 0 through 7, respectively.
4. Hex offset values are for Counter/Timer 0 through 2, respectively.
Table 8-2. W83C553 Internal Register Summary —
Continued
Hex Offset
Type
Name
Hex
Default
Содержание BajaPPC-750
Страница 2: ...BajaPPC 750 PowerPC Based Single Board Computer User s Manual May 2002...
Страница 4: ...BajaPPC 750 PowerPC Based Single Board Computer User s Manual May 2002...
Страница 7: ......
Страница 16: ...0002M621 15 ix Register Map 9 1 Counter Timer Status CTSR 9 2 Register Map 9 2 Counter Timer Mode CTMR 9 4...
Страница 19: ...xii BajaPPC 750 Contents...
Страница 57: ...3 12 BajaPPC 750 Central Processing Unit May 2002...
Страница 77: ...5 12 BajaPPC 750 PMC PCI Interface May 2002...
Страница 111: ...6 34 BajaPPC 750 VMEbus Interface May 2002...
Страница 135: ...8 18 BajaPPC 750 Serial and Parallel I O May 2002...
Страница 207: ...10 68 BajaPPC 750 Monitor May 2002...